Ancient Monuments

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Pen y Clawdd Castle Mound

A Scheduled Monument in Crucorney (Crucornau Fawr), Monmouthshire (Sir Fynwy)

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Latitude: 51.8753 / 51°52'31"N

Longitude: -3.0039 / 3°0'13"W

OS Eastings: 330988

OS Northings: 220112

OS Grid: SO309201

Mapcode National: GBR F6.S1HK

Mapcode Global: VH790.W4B7

Entry Name: Pen y Clawdd Castle Mound

Scheduled Date: 12 December 1950

Source: Cadw

Source ID: 2386

Cadw Legacy ID: MM145

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Monmouthshire (Sir Fynwy)

Community: Crucorney (Crucornau Fawr)

Traditional County: Monmouthshire


The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). The motte comprises a circular steep-sided mound 30m in diameter and up to 2.2m high. The summit is flat and measures 22m in diameter. A 4m wide ditch surrounds the motte, but has been built over on the S and E sides. Outside the ditch is a flat, steep-sided bank 3m high and 4m wide. Outside the bank there is a further 4m wide ditch. Outside the outer ditch is a further bank, 2m high on the outside. An excavation carried out on the site revealed walls on the summit of the motte.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated deposits.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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